Hello,
I have completed the installation successfully on the roof of a vehicle.
For your information, the antenna did have 3M taping on the bottom. The entire bottom of the antenna had a removable cover and beneath was a glue-based 3M adhesive tape. This fit flat against the roof and helped keep the antenna in place when tightening the big bolt.
The datasheet did not have installation instructions, I suggest creating those for future customers. However the antenna has been safely installed and works very well.